May in Pekanbaru averages a daily high of 33.4°C with nights around 23.2°C. Expect roughly 7 wet days totalling 61.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pekanbaru is June–September.
Based on SULTAN SYARIF KASIM II, ID (6.2km), 1995–2024. 16 years of May data.